<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>ACE editor</title> <style type="text/css" media="screen"> body { overflow: hidden; } #editor { margin: 0; position: absolute; top: 0; bottom: 0; left: 0; right: 0; } </style> </head> <body> <pre id="editor"></pre> <script src="ace.js" type="text/javascript" charset="utf-8"></script> <script> var editor = ace.edit("editor"); </script> </body> </html>